1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Evgesh-ka [11]
3 years ago
10

How many kilograms of 30% salt solution by mass and 40% salt solution by mass

Mathematics
1 answer:
Zarrin [17]3 years ago
3 0

Answer:

60 kilograms of the 30% solution

140 kilograms of the 40% solution

Step-by-step explanation:

Let x = the no. of kilos containing 30% salt (solution 1)

and 200 - x = the no. of kilos containging 40% salt solution 2)

.30x = amount of salt in solution 1

.40(200 - x) = amount of salt in solution 2

.37(200) = amount of salt in the final mixture

salt in solution 1 + salt in solution 2 = salt in final mix.

.30x + .40(200 - x) = .37(200)  

Let's multiply thru the equation by 100 to remove the decimal fractions

30x + 40(200 - x) = 37(200)

30x + 8000 - 40x = 7400

-10x = -600

x = 60 kilograms of the 30% solution

200 - 60 = 140 kilograms of the 40% solution

You might be interested in
For t=2, 15t - 2t is equal to
weqwewe [10]

Answer:

26

Step-by-step explanation:

=15(2) - 2(2)

=30 - 4

=26

6 0
3 years ago
After a 32% discount is applied, you purchase a new phone case for $51.20. What was the price before the sale?
cupoosta [38]

Answer:

$67.70

Step-by-step explanation:

Multiply 51.20 by 0.32 then add that to 51.20

8 0
3 years ago
Sally is training for a marathon. She goes for a run every Tuesday and
nikdorinn [45]

Speed = distance / time

Tuesday: speed = 2.4km / 18 minutes = 0.13 km per minute

Friday: speed = 1.8 km / 12 minutes = 0.15 km per minute

0.15 is larger than 0.13 so she ran faster on Friday.

3 0
2 years ago
Read 2 more answers
Plss help w this answers are above:)
Andrews [41]
1)6 2)5 3)5 because math is easy hope it helped
8 0
2 years ago
The tax rate is 6.8%. What is the tax on $9.95 rounded to the nearest hundredth?
Viktor [21]

Answer:

68 cents!

Step-by-step explanation:

9.95 * 0.068 = $0.6766.

Rounded to the nearest hundreth that is 0.68.

That means the tax rate rounds to 68 cents.

3 0
2 years ago
Read 2 more answers
Other questions:
  • 13 points plus brainliest to the correct answer!
    12·2 answers
  • 9523-8756 help please people
    8·2 answers
  • X/5 = 15 (Solving Linear Equations)
    12·1 answer
  • Find the simple interest Kara owes on a 1.5-year loan of $1,500 at an annual interest rate of 7.5%.
    9·1 answer
  • Can anyone help me plz​
    7·1 answer
  • Suppose a least squares regression line is given by y= 4.302x - 3.293. What is the mean value of the response variable if x = 20
    8·1 answer
  • Use the pic for more info will mark brainlest
    13·1 answer
  • Jen solved the equation 100 minus one-half x equals 92 to determine the number of questions, x, she answered incorrectly on a te
    6·2 answers
  • The figure below shows the quotient of Fraction 2 over 5 divided by Fraction 1 over 10.
    14·2 answers
  • Evaluate 5x when x = -5.<br> *help plsss*
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!